Hanna GroLine pH 4.01 Solution Size:500 ml 000 ppm sensor in a

000 ppm sensor in a self-aspirated enclosure

The Hydrofarm Electronic Water Timer makes watering your plants a breeze

As for safety

60 Hz and 10

Six 20' white data link cables:

Hanna GroLine pH 4.01 Solution Size:500 ml 000 ppm sensor in aHI7004 050 is a high quality pH 4. 01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened